304 Stainless Steel Pipe Weight Chart for Buyers

Why Does SS Pipe Weight Matter for Buyers?

When you are buying stainless steel pipes, weight is not just a number — it directly affects your freight cost, structural load calculations, installation planning, and total project budget. Whether you are procuring 10 pipes or 10,000 kg, knowing the SS pipe weight upfront saves you from costly surprises.

This guide gives you a complete SS 304 pipe weight chart across the most common sizes and schedules, plus a simple formula to calculate any pipe weight yourself.

What Is 304 Stainless Steel Pipe?

SS 304 is the most widely used grade of stainless steel in the world. It belongs to the austenitic family and contains approximately 18% chromium and 8% nickel, which is why it is also called 18/8 stainless steel.

Why buyers prefer SS 304 pipe:

• Excellent corrosion resistance in most environments
• Good weldability and formability
• Wide availability in all sizes and schedules
• Cost-effective compared to SS 316
• Suitable for food, pharma, chemical, and general industrial use

SS 304 pipes are available in seamless and welded (ERW) forms, in schedules ranging from SCH 5S to SCH 80S and beyond.

SS 304 Pipe Weight Chart — Weight Per Meter (kg/m)

The table below shows the weight per meter in kg for SS 304 pipes across common NPS sizes and schedules. These values are based on a density of 7.93 g/cm³ for SS 304.

WT = Wall Thickness | kg/m = weight per metre | Density: 7.93 g/cm³ | Source: ASME B36.19M

How to Calculate SS Pipe Weight — Simple Formula

You do not always need a chart. Use this standard formula to calculate the weight of any stainless steel pipe:

W = (OD − WT) × WT × 0.02491

(OD and WT in millimetres — gives weight in kg per metre)

Example: For a 4″ SCH 40S SS 304 pipe → OD = 114.3 mm, WT = 6.02 mm

W = (114.3 − 6.02) × 6.02 × 0.02491 W = 108.28 × 6.02 × 0.02491 W ≈ 16.22 kg/m ✓

For the total weight of a pipe lot:

Total Weight = kg/m × pipe length (m) × number of pipes

SS 304 Pipe Weight Chart — Weight Per 6-Metre Pipe (kg/piece)

Most SS pipes are supplied in 6-metre random lengths. Here is the ready-to-use weight per piece for the most common sizes:

Values = approximate weight per 6-metre pipe length

Seamless vs Welded SS 304 Pipe — Does Weight Differ?

No — the weight does not differ between seamless and welded SS 304 pipes of the same OD and wall thickness. Weight depends only on the dimensions and material density.

What does differ:

• Seamless pipes have tighter dimensional tolerances — actual weight may be marginally higher due to slightly thicker walls from manufacturing
• Welded (ERW) pipes have a weld seam but meet the same dimensional spec — weight is effectively the same for ordering purposes
• For large procurement, always ask for the actual mill weight from the MTC (Mill Test Certificate)

SS 304 vs SS 304L — Any Weight Difference?

No significant difference. SS 304L has a slightly lower carbon content (max 0.03% vs 0.08% for 304) but the same density — 7.93 g/cm³. The weight per metre is identical for the same pipe dimensions. The choice between 304 and 304L is driven by weldability and corrosion resistance requirements — not weight.

Quick Buyer Reference — SS 304 Pipe Weight Summary

Riyaarth Overseas supplies SS 304 seamless and welded pipes in all schedules and sizes — with accurate weight documentation, ASTM A312 certification, and competitive pricing for buyers across India and global markets.

Frequently Asked Questions (FAQs)

How do I calculate the weight of a 304 stainless steel pipe?
Use the formula: W (kg/m) = (OD − WT) × WT × 0.02491, where OD and WT are in millimetres. For example, a 2″ SCH 40S SS 304 pipe with OD = 60.33 mm and WT = 3.91 mm gives W = (60.33 − 3.91) × 3.91 × 0.02491 ≈ 5.49 kg/m.

What is the weight of a 6-metre SS 304 pipe in 2-inch SCH 40S?
A 2-inch SCH 40S SS 304 pipe weighs approximately 5.44 kg per metre, so a standard 6-metre length weighs around 32.64 kg per piece. This is based on an OD of 60.33 mm, wall thickness of 3.91 mm, and SS 304 density of 7.93 g/cm³ per ASME B36.19M specifications.

What is the density of SS 304 used for weight calculation?
The standard density used for SS 304 and SS 304L pipe weight calculations is 7.93 g/cm³ (or 7930 kg/m³). This value is used universally in pipe weight charts and is specified in ASTM and ASME material standards. Some calculators use 7.90 g/cm³, which may result in minor differences.

Why does SS pipe weight matter when buying in bulk?
When purchasing stainless steel pipes in bulk, weight determines your freight charges, crane and handling requirements, structural load on supports, and the per-kg pricing your supplier quotes. A wrong weight estimate can lead to budget overruns and logistical problems on site.

Is the weight different for SCH 10S and SCH 40S pipes of the same size?
Yes — significantly so. SCH 10S has a thinner wall than SCH 40S, which means it weighs less for the same pipe size. For example, a 6-inch SS 304 pipe in SCH 10S weighs 13.76 kg/m while the same pipe in SCH 40S weighs 28.26 kg/m — more than double.

What is the standard length of SS 304 pipes supplied in India?
SS 304 pipes in India are commonly supplied in 6-metre random lengths (R/L), though fixed lengths and double random lengths (DRL — approximately 12 metres) are also available on request. For weight calculation purposes, 6 metres is the standard reference length used by most suppliers.